Added RGB color support for games that support it, and did some more small fixes.

RGB support:
The following tags in chat messages are valid:

{#RGB}
{#RRGGBB}
{#RGBA}
{#RRGGBBAA}

Example:

{#F00F} to print red text with full opacity.

Also made the parser more stable when parsing text which includes { }
brackets that are not color tags.